Concrete Column Volume Calculator

About this calculator

For a round column, the concrete volume needed equals the cylinder volume formula: Volume = π × r² × h, where r is the column’s radius and h is its height. Getting the radius right matters far more than it might seem, since it is squared in the formula — a small measurement error in diameter compounds into a much larger error in the concrete quantity ordered.

Contractors and structural engineers use this calculation constantly when bidding jobs and ordering ready-mix concrete for round piers, columns, and bollards, since ready-mix trucks are typically ordered by the cubic yard or cubic meter and both over-ordering and under-ordering carry real costs — wasted material on one side, a stalled pour and cold joint risk on the other. The same volume figure also coordinates with rebar cage design, since the column’s cross-sectional area determines how much reinforcement clearance and cover the cage detailing needs to account for.

Enter the column’s radius and height, and this calculator applies the cylinder volume formula to estimate the concrete you’ll need.